Whats funny is that one day I stumbled upon this video. This video is of a 370z hydro locking. I don't believe it's a Gen 3 or stock air intake set up, more like an Injen or similar set up but in order for you to hydro lock this is what you must do.
https://www.youtube.com/watch?v=eQLmHlIEqFM
I wasn't able to get it to play via the YouTube function so there is the link if somebody can post it better. Thanks